Guys,
Many thanks for the ideas thus far. I should qualify things by saying that it would be for satellite spotting, so basically point source objects, but down to mag 10 or 11 would be good. It would also be mounted on an alt/az motorised mount, so small would be better than large. A right-way-up, right-way-around image would be highly preferable. Think motorised big binoculars to follow fast moving objects (but not bino's, only a single OTA).
Is it possible to take a Newtonian OTA and add gadgets to give a correctly oriented image?
Cheers,
Jason.
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